U.S. patent application number 12/365969 was filed with the patent office on 2010-04-22 for assembly device.
This patent application is currently assigned to ASKEY COMPUTER CORP.. Invention is credited to Kuo-Ching CHEN, Cheng-Wen DAI, Ching-Feng HSIEH, Chung-Shao HUANG, Chia-Hung LEE, Jen-Huan YU.
Application Number | 20100095518 12/365969 |
Document ID | / |
Family ID | 40750093 |
Filed Date | 2010-04-22 |
United States Patent
Application |
20100095518 |
Kind Code |
A1 |
LEE; Chia-Hung ; et
al. |
April 22, 2010 |
ASSEMBLY DEVICE
Abstract
An assembly device applicable to assembling an isolation cover
to a main body of a circuit board is provided. The main body and
the isolation cover respectively have a plurality of first
positioning portions and a plurality of second positioning portions
corresponding to each other. The second positioning portions
correspondingly pass through the first positioning portions,
respectively. The assembly device includes a base, a press-fitting
mechanism movably connected to the base, and a drive mechanism
disposed at the base. The base has a supporting portion for
disposing the isolation cover and the main body. The press-fitting
mechanism has a press-fitting portion facing the supporting
portion. The drive mechanism has a drive portion connected to the
press-fitting mechanism, for driving the press-fitting mechanism to
move towards the supporting portion of the base via the drive
portion, so as to bend and fasten ends of the second positioning
portions.
Inventors: |
LEE; Chia-Hung; (Taipei
City, TW) ; YU; Jen-Huan; (Taipei, TW) ;
HUANG; Chung-Shao; (Taipei County, TW) ; HSIEH;
Ching-Feng; (Taipei City, TW) ; DAI; Cheng-Wen;
(Taipei, TW) ; CHEN; Kuo-Ching; (Taipei,
TW) |
Correspondence
Address: |
RABIN & Berdo, PC
1101 14TH STREET, NW, SUITE 500
WASHINGTON
DC
20005
US
|
Assignee: |
ASKEY COMPUTER CORP.
Taipei
TW
|
Family ID: |
40750093 |
Appl. No.: |
12/365969 |
Filed: |
February 5, 2009 |
Current U.S.
Class: |
29/729 ;
100/257 |
Current CPC
Class: |
H05K 13/0447 20130101;
Y10T 29/53174 20150115; Y10T 29/53252 20150115; Y10T 29/5327
20150115; H05K 9/0022 20130101; H05K 13/0473 20130101; Y10T
29/49126 20150115; Y10T 29/5313 20150115 |
Class at
Publication: |
29/729 ;
100/257 |
International
Class: |
B23P 19/02 20060101
B23P019/02; B30B 1/04 20060101 B30B001/04 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 20, 2008 |
TW |
097140155 |
Claims
1. An assembly device for assembling an isolation cover to a main
body of a circuit board, wherein the main body and the isolation
cover respectively have a plurality of first positioning portions
and a plurality of second positioning portions corresponding to
each other, and the second positioning portions correspondingly
pass through the first positioning portions, respectively, the
assembly device comprising: a base, having a supporting portion for
disposing the isolation cover and the main body; a press-fitting
mechanism, movably connected to the base and having a press-fitting
portion facing the supporting portion; and a drive mechanism,
disposed at the base and having a drive portion connected to the
press-fitting mechanism, for driving the press-fitting mechanism to
move towards the supporting portion via the drive portion, so as to
bend and fasten ends of the second positioning portions.
2. The assembly device according to claim 1, wherein the base is an
L-shaped base comprising a bottom portion and a stand column
perpendicular to the bottom portion.
3. The assembly device according to claim 2, wherein the base has a
height adjuster at the bottom portion, the supporting portion
disposed on the height adjuster, and a first sliding portion
disposed on the stand column.
4. The assembly device according to claim 3, wherein the supporting
portion is integrally disposed on one of the base and the height
adjuster.
5. The assembly device according to claim 3, wherein the
press-fitting mechanism comprises a second sliding portion
corresponding to the first sliding portion.
6. The assembly device according to claim 5, wherein the first
sliding portion and the second sliding portion are a sliding rail
and a sliding block corresponding to each other.
7. The assembly device according to claim 1, wherein the supporting
portion has a first groove and a second groove respectively for
disposing the main body and the isolation cover.
8. The assembly device according to claim 1, wherein the
press-fitting mechanism comprises a press-fitting portion disposed
corresponding to the supporting portion, guiding and bending
portions for guiding and bending the second positioning portions,
first restricting portions for holding the guiding and bending
portions to side faces of the press-fitting portion, and second
restricting portions passing through upper ends of the guiding and
bending portions.
9. The assembly device according to claim 8, wherein the
press-fitting portion is a press-fitting block.
10. The assembly device according to claim 8, wherein the guiding
and bending portions are baffles disposed on the side faces of the
press-fitting portion.
11. The assembly device according to claim 8, wherein each of the
guiding and bending portions has a chamfer at a lower end thereof
and a third restricting portion disposed on a side face
thereof.
12. The assembly device according to claim 11, wherein the chamfers
are inclined from a side facing the press-fitting portion toward a
side away from the press-fitting portion.
13. The assembly device according to claim 11, wherein the third
restricting portions are guiding slots.
14. The assembly device according to claim 8, wherein the first
restricting portions are bolts or latches.
15. The assembly device according to claim 8, wherein the second
restricting portions are connecting rods with springs sleeved
thereon.
16. The assembly device according to claim 1, wherein the
press-fitting portion is provided with a groove.
17. The assembly device according to claim 16, wherein the groove
is an arc-shaped groove.
18. The assembly device according to claim 1, wherein the drive
portion is a link rod.
19. The assembly device according to claim 1, wherein the drive
mechanism comprises a connecting portion connected to the drive
portion and an actuating portion connected to the connecting
portion and the base.
20. The assembly device according to claim 19, wherein the
connecting portion is a connecting arm or a link rod.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to an assembly technology, and
more particularly to an assembly device applicable to a circuit
board.
[0003] 2. Related Art
[0004] When a wireless product performs the data wireless
transmission under a high power state, the high frequency harmonic
waves are extremely easily generated by non-linear characteristics
of active components, so as to result in an electromagnetic
interference (EMI) emission, which is often the prime contributor
to the performance degradation. In order to solve the problem,
legal regulations are imposed by many countries to restraint
illegal input applications and utilizations of the wireless
product. Accordingly, when the designers and manufactures of the
wireless product design a control line of the wireless product, the
legal requirements of wireless applications must be complied and
incorporated into the wireless design. The circuit of the wireless
product is also affected by the signals of the external
electromagnetic wave, such as, radio frequency (RF) wireless
signals. Therefore, performance inconsistencies can occur easily in
the wireless products.
[0005] Therefore, it is a critical factor for the designers and
developers to know how to effectively eliminate the interference
and the noise in order to improve the performance of the wireless
products. One of conventional methods is to use an isolation cover
disposed on a circuit board to eliminate the interference. As shown
in FIG. 1, an isolation cover 22 is fully soldered onto a main body
20 of a circuit board 2 by adopting a surface mount technology
(SMT), such that the isolation cover 22 can cover part of
components on the circuit board 2, such as, the chip(s) located on
a surface of the main body 20 of the circuit board 2. Then, a
reflow-soldering process is performed on the circuit board 2
through a tin oven (not shown).
[0006] However, this conventional method is used a soldering
technique called a single piece fully soldering process to solder
the isolation cover 22 entirely onto the main body 20. After the
reflow-soldering process, if some of the components underneath the
isolation cover 22 fail, a desoldering process must be performed to
detach the isolation cover 22 in order to replace the corresponding
components. In this manner, the maintenance is costly, and the
repairing process is time consuming, and the isolation cover 22 can
be easily deformed, more significantly, the detached isolation
cover 22 cannot be reused. As a result, the fabrication cost of the
conventional method is extremely high.
[0007] In order to solve the disadvantage of the single piece fully
soldering technology, a two-piece fully soldering technology is
proposed, as shown in FIG. 2. A lower frame 24 and an upper cover
26 are used to replace the single piece isolation cover. During
assembling, the lower frame 24 is firstly soldered to the main body
20 of a circuit board 2'. The upper cover 26 is utilized to cover
the main body 20 of the circuit board 2' after the circuit board 2'
passing through the tin oven, in such that the upper cover 26 can
be integrated to the lower frame 24.
[0008] However, the requirements of performing the two-piece fully
soldering process are more complicated, and the cost is relatively
higher. Moreover, since it needs to solder the lower frame 24 first
and then perform a secondary processing on the upper cover 26 after
passing through the tin stove, the number of the steps in the
assembly process is increased.
[0009] Meanwhile, since both the above single-piece fully soldering
technology and two-piece fully soldering technology need to perform
the soldering by using the solder, the main body and elements
thereon are often damaged due to heat generated during the
soldering process which can easily result in the defect of the SMT
process of having a high defective fraction.
[0010] Some conventional methods are proposed to resolve the
above-mentioned problems, such as the methods disclosed in PRC
Utility Model Patent Publication No. CN201063966Y, and US Patent
Publication Application No. 2008/0043453 A1. In the PRC Utility
Model Patent Publication No. CN201063966Y, the isolation cover is
used to cover the entire circuit board, and an elastic arm with an
inward end is designed to clamp the periphery of the circuit board.
In the US Patent Publication Application No. 2008/0043453 A1, the
surface of the partial circuit board is covered by the isolation
cover passing through the circuit board, and an interfering
structure with an outward end is designed to fix the isolation
cover on the circuit board.
[0011] In both teachings, solder tin is not an essential
requirement to perform the soldering process. However, the elastic
arm or the interfering structure is easily deformed by the high
temperature resulted in the subsequent process, thereby affecting
the buckling force to cause the falling of the isolation cover.
[0012] From the above-mentioned methods, the conventional arts have
many problems, therefore, it is an objective of the present
invention to provide a technology for assembling a circuit board,
so as to prevent the defects of the conventional arts.
SUMMARY OF THE INVENTION
[0013] In view of the defects of the conventional arts, the present
invention is directed to an assembly device, so as to lower the
manufacturing cost of the circuit board.
[0014] The present invention is also directed to an assembly
device, so as to improve the yield of the manufacturing process of
the circuit board.
[0015] In order to achieve the above and other objectives, the
present invention provides an assembly device for assembling an
isolation cover to a main body of a circuit board. The main body
and the isolation cover respectively have a plurality of first
positioning portions and a plurality of second positioning portions
corresponding to each other. The second positioning portions
correspondingly pass through the first positioning portions,
respectively. The assembly device includes: a base, having a
supporting portion for disposing the isolation cover and the main
body; a press-fitting mechanism, movably connected to the base and
having a press-fitting portion facing the supporting portion; and a
drive mechanism, disposed at the base and having a drive portion
connected to the press-fitting mechanism, for driving the
press-fitting mechanism to move towards the supporting portion of
the base via the drive portion, so as to bend and fasten ends of
the second positioning portions.
[0016] In the assembly device, the base is an L-shaped base
including a bottom portion and a stand column perpendicular to the
bottom portion. The base has a height adjuster at the bottom
portion, the supporting portion disposed on the height adjuster,
and a first sliding portion disposed on the stand column. In an
embodiment, the supporting portion may be a separate element. It
should be understood that, the supporting portion may also be
integrally disposed on one of the base and the height adjuster. The
press-fitting mechanism includes a second sliding portion
corresponding to the first sliding portion. The first sliding
portion and the second sliding portion are a sliding rail and a
sliding block corresponding to each other. Meanwhile, the
supporting portion may have a first groove and a second groove
respectively for disposing the main body and the isolation
cover.
[0017] In an embodiment, the press-fitting mechanism may include a
press-fitting portion disposed corresponding to the supporting
portion, guiding and bending portions for guiding and bending the
second positioning portions, first restricting portions for holding
the guiding and bending portions to side faces of the press-fitting
portion, and second restricting portions passing through upper ends
of the guiding and bending portions. The press-fitting portion is a
press-fitting block. The guiding and bending portions are baffles
disposed on the side faces of the press-fitting portion. Each of
the guiding and bending portions has a chamfer at a lower end
thereof and a third restricting portion disposed on a side face
thereof. The first restricting portions are bolts or latches. The
second restricting portions are connecting rods with springs
sleeved thereon. The third restricting portions are guiding
slots.
[0018] It should be noted that, the guiding and bending portions,
the first restricting portions, the second restricting portions,
and other detailed structures may also be optionally omitted, with
only the press-fitting portion being provided with a groove. The
groove may be, for example, an arc-shaped groove. Thus, the second
positioning portions may be directly flattened without performing
the bending operation first, thereby simplifying the structure.
[0019] Moreover, the drive mechanism may include a connecting
portion connected to the drive portion and an actuating portion
connected to the connecting portion and the base. The drive portion
is a link rod. The connecting portion is a connecting arm or a link
rod. In such a manner, the operations may be, for example,
performed with less force by utilizing the lever principle. It
should be understood that, pneumatic, electromagnetic, hydraulic,
or piezoelectric link rod drive mechanisms, or other equivalent
drive mechanisms that can drive the press-fitting mechanism may
also be applied, but the present invention is not limited to
this.
[0020] As compared with the conventional art, in the present
invention, an assembly device is designed to assemble the isolation
cover to the main body in a press-fitting manner, so that it is not
necessary to use a lower frame and to solder by using solder as in
the conventional art. Therefore, the manufacturing cost of the
circuit board is lowered, the yield of the manufacturing process of
the circuit board is improved, and a stable positioning effect is
kept. Meanwhile, when the technology of the present invention is
applied, elements on the circuit board can be replaced without a
desoldering process, which is convenient for maintenance.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The present invention will become more fully understood from
the detailed description given herein below for illustration only,
and thus are not limitative of the present invention, and
wherein:
[0022] FIG. 1 is a schematic view of a conventional circuit board
having a single-piece fully soldered isolation cover;
[0023] FIG. 2 is a schematic view of a conventional circuit board
having a two-piece fully soldered isolation cover;
[0024] FIG. 3 is a schematic view of an assembly device according
to an embodiment of the present invention;
[0025] FIG. 4 is a schematic exploded view of an isolation cover
and a main body of a circuit board;
[0026] FIG. 5 is a partial enlarged schematic view of an assembly
device according to an embodiment of the present invention;
[0027] FIGS. 6a-6g show a flow chart of a process for assembling
the circuit board in FIG. 4 by using the assembly device in FIG. 3;
and
[0028] FIG. 7 is a partial enlarged schematic view of an assembly
device according to another embodiment of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0029] The implementation of the present invention is described
with specific detailed embodiments as follows, and those of
ordinary skill in the art may easily understand other advantages
and efficacies of the present invention from the content of the
specification.
[0030] FIGS. 3-6g are schematic views of an assembly device
according to an embodiment of the present invention. Referring to
FIG. 3, an assembly device 1 of this embodiment includes a base 11,
a press-fitting mechanism 13 movably connected to the base 11, and
a drive mechanism 15 connected to the press-fitting mechanism
13.
[0031] It should be noted that, the assembly device 1 of this
embodiment is applicable to assembling an isolation cover 30 to a
main body 50 as shown in FIG. 4. The main body 50 and the isolation
cover 30 respectively have a plurality of first positioning
portions 501 and a plurality of second positioning portions 301
corresponding to each other. The second positioning portions 301
correspondingly pass through the first positioning portions 501,
respectively. The isolation cover 30 may be disposed on one surface
of the main body 50 such that the second positioning portions 301
pass through the other surface of the main body 50 via the first
positioning portions 501. The assembly can be completed simply by
bending ends of the second positioning portions 301 to contact the
other surface by the assembly device 1 of this embodiment. It
should be understood that, in practice, the isolation cover 30 and
the main body 50 of the circuit board may be modified in structure,
and the modifications are applicable to the present invention as
long as they have a plurality of first positioning portions 501 and
a plurality of second positioning portions 301 corresponding to
each other and the second positioning portions 301 correspondingly
pass through the first positioning portions 501, respectively.
Meanwhile, the number of the first positioning portions 501 may be
larger than that of the second positioning portions 301, so that
even different isolation covers 30 are applicable to the main body
50, thus improving adaptability.
[0032] The base 11 is a device stage for providing support to the
press-fitting operation and may be, for example, an L-shaped base
including a bottom portion and a stand column perpendicular to the
bottom portion. In this embodiment, the base 11 has a height
adjuster 111 at the bottom portion, a supporting portion 113
disposed on the height adjuster 111, and a first sliding portion
115 disposed on the stand column. The height adjuster 111 may be
any structure or element that can adjust the height, for example,
lift up or bring down the supporting portion 113 simply by rotating
an operation portion 1111 of the height adjuster 111, so as to move
the supporting portion 113. The supporting portion 113 is, for
example, an object stage, and has a first groove 1131 and a second
groove 1133 respectively for disposing the main body 50 and the
isolation cover 30. The size of the first groove 1131 is larger
than that of the second groove 1133, and the first groove 1131 and
the second groove 1133 are positioned to guide the second
positioning portions 301 to fit to the first positioning portions
501 respectively.
[0033] It should be understood that, in this embodiment, the
driving stroke of the drive mechanism 15 is set as a fixed stroke
so as to control the press-fitting mechanism 13 to bend the ends of
the second positioning portions 301 to contact the other surface of
the main body 50 only, but not press the main body 50 in the
press-fitting process, thereby preventing the main body 50 from
being damaged. In other embodiments, the driving stroke of the
drive mechanism 15 may also be modified to be an adjustable stroke
so as to control the driving stroke by other structures or
elements, so that the height adjuster 111 can be omitted.
Meanwhile, in this embodiment, the supporting portion 113 is
disposed in addition to the height adjuster 111 to serve as an
object stage. In this manner, when the structures or dimensions of
the main body 50 and the isolation cover 30 to be assembled change,
the assembly can be performed by replacing a suitable supporting
portion 113. However, it should be understood by those of ordinary
skill in the art that, the supporting portion 113 may also be
integrally disposed on the base 11 or the height adjuster 111, but
not limited to that described in this embodiment.
[0034] Referring to FIG. 5, the press-fitting mechanism 13 includes
a press-fitting portion 131 facing the supporting portion 113,
guiding and bending portions 133 for guiding and bending the second
positioning portions 301, first restricting portions 135 for
holding the guiding and bending portions 133 to side faces of the
press-fitting portion 131, second restricting portions 137 passing
through upper ends of the guiding and bending portions 133, and a
second sliding portion 139 corresponding to the first sliding
portion 115.
[0035] In this embodiment, the press-fitting portion 131 may be a
press-fitting block having a dimension larger than or equal to that
of the isolation cover 30. The guiding and bending portions 133 are
disposed on the side faces of the press-fitting portion 131 and
are, for example, retractable baffles. Lower ends of the guiding
and bending portions 133 protrude from a surface of the
press-fitting portion 131.
[0036] Each of the guiding and bending portions 133 has a chamfer
1331 at the lower end thereof and a third restricting portion 1333
disposed on a side face thereof. The chamfers 1331 are inclined
from a side facing the press-fitting portion 131 toward a side away
from the press-fitting portion 131.
[0037] The first restricting portions 135 may be, for example,
bolts or latches. The third restricting portions 1333 may be, for
example, guiding slots, for the first restricting portions 135 to
provide the moving stroke of the third restricting portions
1333.
[0038] The second restricting portions 137 may be connecting rods
1373 with springs 1371 sleeved thereon. Here, the connecting rods
1373 can pass through the upper ends of the guiding and bending
portions 133 and then connected to the first restricting portions
135. When the press-fitting portion 131 is driven to press
downward, the guiding and bending portions 133 will contact the
main body 50 and the isolation cover 30 to be assembled first, and
the first restricting portions 135 may restrict the linear movement
of the third restricting portions 1333. In this manner, as the
press-fitting portion 131 continues to be driven and thus is
brought into contact with the main body 50 and the isolation cover
30 to be assembled, the guiding and bending portions 133 may move
toward the second restricting portions 137 (in an upward
direction), thereby keeping the press-fitting portion 131 and the
guiding and bending portions 133 approximately coplanar.
[0039] The second sliding portion 139 is disposed corresponding to
the first sliding portion 115 of the base 11, and the first sliding
portion 115 and the second sliding portion 139 may be a sliding
rail and a sliding block corresponding to each other. That is, in
this embodiment, the first sliding portion 115 is a sliding rail
and the second sliding portion 139 is a sliding block. However, in
other embodiments, the first sliding portion 115 may also be
designed as a sliding block, and the second sliding portion 139 may
be designed as a sliding rail. It should be understood that, in
other embodiments, the first sliding portion 115 and the second
sliding portion 139 may also be modified to be other equivalent
elements, such as a rack (chain) and a gear, that can move linearly
corresponding to each other, but not limited to those described in
this embodiment.
[0040] The drive mechanism 15 is disposed at the base 11, for
example, fixed to the stand column of the base 11, and is used to
uniformly press the press-fitting mechanism 13 downward. In this
embodiment, the drive mechanism 15 may include a drive portion 151
connected to the press-fitting mechanism 13, a connecting portion
153 connected to the drive portion 151, and an actuating portion
155 connected to the connecting portion 153 and the stand column of
the base 11. The drive portion 151 is used to move the
press-fitting mechanism 13 so as to bend and fasten the ends of the
second positioning portions 301. In addition, the drive portion 151
may be a link rod for moving the press-fitting portion 131 up and
down, so as to drive the press-fitting portion 131 to bend the
second positioning portions 301. It should be noted that, although
the assembly is performed by moving the press-fitting portion 131
up and down in this embodiment, the manner of moving the
press-fitting portion 131 left and right may also be used in other
embodiments. Other manners are also applicable to the present
invention, as long as the drive mechanism 15 is used to drive the
press-fitting mechanism 13 to move toward the supporting portion
113 of the base 11 via the drive portion 151 so as to bend and
fasten the ends of the second positioning portions 301.
[0041] In this embodiment, two connecting arms are disposed to
serve as the connecting portion 153. However, it should be
understood that, the connecting portion 153 may also be a link rod
or other equivalent connecting elements coupled to the drive
portion 151 and the actuating portion 155. The actuating portion
155 is pivoted to the stand column of the base 11 at one end
thereof and is pivoted to the connecting portion 153 at an
approximately central portion thereof, and the other end thereof
can press the actuating portion 155 downward to drive the
press-fitting portion 131 to move downward.
[0042] When it is intended to assemble the isolation cover 30 to
the main body 50, the main body 50 and the isolation cover 30 to be
assembled can be provided to the supporting portion 113. The
isolation cover 30 may be disposed in the second groove 1133 first
as shown in FIG. 6a, and the main body 50 is then disposed in the
first groove 1131 as shown in FIG. 6b. In this manner, the
isolation cover 30 is disposed on one surface of the main body 50
such that the second positioning portions 301 pass through the
other surface of the main body 50 via the first positioning
portions 501.
[0043] It should be noted that, since the technology of
press-fitting assembly is adopted in the present invention, the
isolation cover 30 can be disposed on the main body 50 after the
circuit board passes through the tin stove. In this manner, it can
be inspected whether the elements fail or not immediately after the
circuit board passes through the tin stove, thereby reducing the
defective fraction of the manufacturing process of the circuit
board.
[0044] Meanwhile, although the isolation cover 30 and the main body
50 are combined together manually first and then put into the
supporting portion 113 in the operation mode of this embodiment,
the isolation cover 30 and the main body 50 may also be combined
together by using an automatic production line first and then put
into the supporting portion 113 in other embodiments.
[0045] Then, the actuating portion 155 is pressed downward, as
shown in FIGS. 6c and 6d. In this step, the second positioning
portions 301 may be guided to a direction to be bent by the guiding
and bending portions 133 in advance before press-fitting. In this
embodiment, the chambers 1331 may in contact with the ends of the
second positioning portions 301 first, so as to prebend the second
positioning portions 301. As the downward pressing continues to be
performed, when the press-fitting portion 131 contacts the main
body 50 and the isolation cover 30 to be assembled on the
supporting portion 113, as shown in FIGS. 6e and 6f, the guiding
and bending portions 133 may move upward and the first restricting
portions 135 are located below the third restricting portions 1333,
such that the press-fitting portion 131 and the guiding and bending
portions 133 are maintained coplanar. At this time, the springs
1371 are compressed due to the upward movement of the guiding and
bending portions 133, so that the springs 1371 release the elastic
restoring force generated by compression after the downward
pressing action is finished, thereby pushing the guiding and
bending portions 133 back to their original positions.
[0046] Referring to FIG. 6g, the ends of the second positioning
portions 301 may be bent to contact the surface of the main body
50, for example, contact ground portions 503 of the main body
50.
[0047] Since the drive mechanism 15 of this embodiment is, for
example, a link rod drive mechanism designed according to the lever
principle and having a long arm of force, it is force-saving. Here,
it should be understood that, the drive mechanism 15 may also be
modified into other mechanical linear drive mechanisms such as
pneumatic, electromagnetic, hydraulic, oil-pressure, or
piezoelectric linear drive mechanisms, but not limited to those
described in this embodiment. For example, the drive mechanism 15
may be a linear drive mechanism including a ratchet wheel and a
gear set engaged with the ratchet wheel.
[0048] It should be appreciated that, although the drive mechanism
15 is pressed downward in the above press-fitting step, the
assembly actions may be inverted in other embodiments, since
positions of the drive mechanism 15 and the press-fitting mechanism
13 may be inverted. For example, when the press-fitting mechanism
13 is disposed above the drive mechanism 15, the drive mechanism 15
needs to be pulled upward for press-fitting. Meanwhile, in order to
provide a uniform force for press-fitting, pneumatic (hydraulic)
press-fitting may be used to replace manual press-fitting.
Alternatively, weight press-fitting or other equivalent
press-fitting technologies may also be adopted. For example, when
the pneumatic (hydraulic) press-fitting is used, the height
adjuster 111 may be omitted, since the height of the press-fitting
mechanism 13 to be driven can be controlled by the stroke of a
pneumatic (hydraulic) cylinder. In other words, those of ordinary
skill in the art may modify the detailed structures of the
press-fitting mechanism 13 or invert the positions of the
press-fitting mechanism 13 and the drive mechanism 15. Meanwhile,
since the modifications can be understood and implemented by those
of ordinary skill in the art, corresponding drawings are omitted
herein.
[0049] For example, referring to FIG. 7, the press-fitting portion
131 may be provided with a groove 1311. For example, the groove
1311 may be, but not limited to, an arc-shaped groove. Any kind of
groove is applicable to the present invention, as long as they can
bend the ends of the second positioning portions 301 to contact the
surface of the main body 50. In other words, in this embodiment,
the second positioning portions are guided and bent first, and then
flattened to contact the corresponding ground portions. However, in
other embodiments, the second positioning portions may be directly
flattened to contact the corresponding ground portions, or
flattened after being passed through the first positioning portions
in other manners. Moreover, the guiding and bending portions 133,
the first restricting portions 135, the second restricting portions
137, and other detailed structures may thus be omitted. Moreover,
in this embodiment, the size and shape of the contact surface of
the press-fitting portion 131 contacting the isolation cover 30 may
be designed such that only peripheries of the isolation cover 30
are pressed, thereby preventing the center of the isolation cover
30 from being pressed.
[0050] Moreover, in this embodiment, the isolation cover 30 is
disposed first such that the second positioning portions 301 of the
isolation cover 30 face upward, and the main body 50 is then
disposed. However, in other embodiments, the main body 50 may also
be disposed first, and the isolation cover 30 is then disposed such
that the second positioning portions 301 face downward. Therefore,
in the present invention, not only the assembly actions may be
inverted, but the objects to be assembled may also be inverted.
[0051] The above embodiments are merely intended to illustrate the
principles and efficacies of the present invention, but not to
limit the present invention. The invention being thus described, it
will be obvious that the same may be varied in many ways. Such
variations are not to be regarded as a departure from the spirit
and scope of the invention, and all such modifications as would be
obvious to one skilled in the art are intended to be included
within the scope of the following claims.
* * * * *